Make map environments more granular and make all map palettes except darkness depend on map environment (#7)

engine/events/field_moves.asm

@@ -17,7 +17,6 @@ BlindingFlash:
 	farcall UpdateTimeOfDayPal
 	ld b, CGB_MAPPALS
 	call GetCGBLayout
-	farcall LoadOW_BGPal7
 	farcall FadeInPalettes
 	ret
 

engine/events/magnet_train.asm

@@ -404,7 +404,7 @@ MagnetTrain_Jumptable_FirstRunThrough:
 	ld a, [wTimeOfDay]
 	maskbits NUM_DAYTIMES
 	ld [wTimeOfDayPal], a
-	ld a, TOWN
+	ld a, OUTDOOR_GRASSY
 	ld [wEnvironment], a
 	ld b, CGB_MAPPALS
 	call GetCGBLayout

engine/events/overworld.asm

@@ -762,9 +762,9 @@ EscapeRopeOrDig:
 
 .CheckCanDig:
 	call GetMapEnvironment
-	cp CAVE
+	cp INDOOR_CAVE
 	jr z, .incave
-	cp DUNGEON
+	cp INDOOR_ICE_CAVE
 	jr z, .incave
 .fail
 	ld a, $2
@@ -1677,13 +1677,8 @@ BikeFunction:
 
 .CheckEnvironment:
 	call GetMapEnvironment
-	call CheckOutdoorMap
-	jr z, .ok
-	cp CAVE
-	jr z, .ok
-	cp GATE
-	jr z, .ok
-	jr .nope
+	cp INDOOR_BUILDING
+	jr z, .nope
 
 .ok
 	call GetPlayerTile

engine/events/sweet_scent.asm

@@ -30,7 +30,7 @@ SweetScentNothing:
 	end
 
 SweetScentEncounter:
-	farcall CanUseSweetScent
+	farcall CanEncounterWildMonInThisTile
 	jr nc, .no_battle
 	ld hl, wStatusFlags2
 	bit STATUSFLAGS2_BUG_CONTEST_TIMER_F, [hl]